做个家用彩电的遥控器，需要那些元器件？

http://wapwenku.baidu.com/view/a2ca0d16866fb84ae45c8dc4.html?ssid=b156d7a5b6b7b0a1d7a5b6b75f1a&from=879a&uid=0&pu=usm@0,sz@1320_1001,ta@iphone_2_5.0_3_537&bd_page_type=1&baiduid=396D5FFBE67D7FB13DA8E521D2087AAD&tj=wenkuala_3_0_10_l1#page/1/1445217107151

５１单片机，一堆按键，红外发射管